Tension device for loom-shuttles.



No. 644,895. Patented Mar. 6, I900.

F. CARPENTIER.

TENSION DEVICE FOR LOOM SHUTTLES.

(Application filed Oct. 12, 1899.)

(No Model.)

Witnesses. Inventor.

' Trad Attorneys NI'IED STATES PATENT OFFICE.

FRED CARPENTIER, OF \VOONSOCKET, RHODE ISLAND.

TENSION DEVICE FOR LOOIVl-SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 644,895, dated March 6, 1900. Application filed October 12 1899. Serial No. '73 3,694. (No model.)

To mZZ whom it may concern.-

Be it known that I, FRED CARPENTIER, of

\Voonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Tension Devices for Loom-Shuttles; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to the shuttle used in looms in weaving. It is fully explained and illustrated in this specification and the accompanying drawings.

Figure l is a top view of shuttle with the improvements. Fig. 2 is a vertical section taken through part of the shuttle lengthwise on line 2 2 in Fig. 1. Figs. 3 to 6 represent views of the different devices used in the improvements, enlarged.

The object of the invention is to produce a simple and inexpensive friction device for a shuttle to regulate the tension on the yarn and that shall be durable, easy to regulate, and handy for the weaver to thread. Its construction and operation are as follows:

A represents a shuttle, and R the cop of yarn, held on the spindle Ct in the usual way. A little ways in front of the spindle is a plate h of sheet metal, one edge of which is bent around to form a tubular bearing (see Fig. 4) for a pin g, which passes through one side of the shuttle, and after passing through the tubular part of the plate h it screws into the other side of the shuttle. Anotherpin g, similar to the one g, is also put through one side of the shuttle and screwed into the other side, so as to lie across the front end of the plate h. An opening cis made about in the center of the plate h. An open spiral spring a (see Fig. 5) is made, having its upper half made in coils considerably larger in diameter than the diameter of the coils of the lower half. The proper proportion of the two parts may be, say, three-eighths of an inch for the upper coils to one-quarter of an inch for the lower coils. A wood-screw 1)- (see Fig. 6) has a head just small enough to go freely in the upper part of the spring 12 and rest on the upper coil of the lower part of the spring. (See Fig. 5.) This spring is placed under the hole 0 in the plate It and the screw I) screwed into the wood beneath the plate h. This spring presses the plate h up against the pin g and makes frictionon the yarn 71;, which passes between the plate and the pin.

The course of the yarn is from the cop B through a loop of wire j on the plate and then under the pin 9 to the outlet N. To increase the tension on the yarn, the screw 1) is unscrewed a little with a screw-driver through the hole 0 in the plate 77., which allows the spring at to rise and push the plate up harder and increase the friction 011 the yarn between the plate and pin g, and by turning the screw farther in or down the spring is drawn down by the screw-head, which lessens its pressure against the plate and diminishes the tension 011 the yarn. In this way the tension on the yarn, which is a very important point, can easily be regulated to produce the best efiects upon the woven fabric.

Having thus described my improvements, I claim as my invention and desire to secure by Letters Patent-- 4 A tension device for loom-shuttles, consistin get the combination of apin passing through the shuttle near the end of the cop-spindle, a plate held. to swing on said pin, a spiral spring placed under said plate and having the coils of its upper part made larger than the coils of its lowerpart to receive the head of a screw, I

a screw to occupy said spring to regulate its pressure, an opening made in said plate to allow of access to the screw, a pin passing horizontally through the shuttle over the free end of the plate, substantially as described.

In testimony whereof I have hereunto set myhand this 30th day of September, A. D. 1899.

FRED GARPENTIER.

In presence of- BENJ. ARNOLD, JAMES E. ARNOLD. 

